docs: def main(self):
          """
          Return the default method in this module.
  
          :return: the default method in this module
          :rtype: ``boa.code.method.Method``
          """
  
          for m in self.methods:
  
              if m.name in ['Main', 'main']:
                  return m
  
          if len(self.methods):
              return self.methods[0]
  
          return None